无机陶瓷膜微滤精制山茱萸水提液的实验研究

Study on the refining procedure of Fructus corni water extraction liquid using inorganic ceramic membrane microfiltration

目的以山茱萸水提液为实验对象,研究经无机陶瓷膜微滤对其分离精制的效果。方法以理化特征参数(pH、浊度、黏度、电导率、固含物)和高分子物质截留率(蛋白质、淀粉、果胶、鞣质)及主要成分透过率等为指标,综合考察无机陶瓷膜微滤对山茱萸水提液的分离精制效果。结果经陶瓷膜微滤后山茱萸水提液的物理化学性质均发生了不同程度的改变,其中浊度和固含量分别降低了86.34%和31.95%,电导率降低了约15.88%,黏度系数略有降低,pH值略有升高。淀粉、果胶和鞣质等高分子物质的截留率均高于70%,而蛋白质的截留率相对较低,为46.79%。主要成分马钱苷的透过率高达75.28%。结论陶瓷膜微滤技术能够有效地除去山茱萸水提液中无效的高分子物质而较好地保留小分子成分,能改善中药水提液的溶液环境,具有较好的分离精制效果。

Objective To investigate the effects of inorganic ceramic membrane microfiltration on the water extraction liquid of Fruc‐tus corni .Methods In this study ,the physical‐chemical parameters （pH ,turbidity ,viscosity ,conductivity ,and the total dis‐solved solids） ,retentions of macromolecules （protein ,starch ,pectin ,and tannins） and the transmittance of active ingredients were taken as indicators to comprehensively survey the refining procedure of Fructus corni water extraction liquid by inorganic ce‐ramic membrane microfiltration . Results The physical‐chemical parameters of Fructus corni water extraction liquid showed different changes after filtration .Compared with the raw materials ,the turbidity and total dissolved solids of permeate decreased 86 .34% and 31 .95% ,respectively ;the conductivity decreased about 15 .88% ;the viscosity slightly reduced and pH slightly in‐creased .The retentions of starch ,pectin and tannins were all higher than 70% ,while protein was relatively low with the retention of 46 .79% .The transmittance of active ingredients loganin reached up 75 .28% .Conclusion The ceramic membrane microfiltration technology can remove macromolecules effectively and retain the active ingredient included in Fructus corni water extraction liquid satisfactorily .